Battery Cutoff Switch
Digital Electronics low voltage cutoff circuit?
Recently I built a USB battery charger for my ipod touch\ cell phone. finally getting it to work I want to put an extra safe feature in it. I want the device to cut off the current when the voltage potential from the battery drops below 7 volts. This is because I have a 7805 5volt regulator and i want to make sure it wont drop below 5 volts. I believe it needs like 6.5 volts to operate?
Is there any way i can create a circuit thant cuts the current when voltage does drop below 7volts?
i think I would have the set the voltage with a resistor and use maybe an IC as a switch.
any help would be appreciated!
yes you could use an IC to measure the voltage, then send an output when it reaches a certain point and send that output to a switch that would open when it receives and input. Or when you first described the problem, I thought of a relay. A relay is a circuit element that is designed to open or close when a certain quantity is detected.
I’m not sure where exactly you could find a part that meets your needs.
But I used digikey.com when I was an intern
GSX Battery Relocation
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